Brake mechanism



Filed March 20. 1925 s, H. CLAPP BRAKE MECHANI SM 2 Sheets-Sheet l BRAKE MECHANI SNI` Filed March zo.. 1925 fsheetysheet 2 entre' stirs. avr rrr-rsa s rujafn'r n. cLarr., or WASHINGTON, `Discrnrc'r or conciliare,A AssIeNon', nr-.MESNE ASSIGNMENTS, rro BEN-DIX BRAKE COMPANY, or omesso, rumors, s. conroaa- 'rIoN or mLINoIs BRAKE MECHANISM` vApplication led March 20,1925. Serial No. 17,029.

10 vide means with the brake ,mechanism,

whereby a pressure may be exerted upon the friction elements. l l l A further object of m invention is to provide a mounting for t e friction lelements of the brake mechanism. A

.A still further object is to provide a brake mechanism which. is strong and sturdy in construction and not liable to get out of order' even after long and continuous use.

may be incident to my improvements, the invention consists in the parts and combinations to be hereinafter set forth and claimed, with the understanding that the several necessary elements comprising my invention, may be varied in construction, proportions and arrangement, Without departingfrom the spirit and scope ofthe appended claims.

1n order-to make my invention more clearly understood, 1 have shown in the accompanying.drawings means for carrying the same into practical eect, without limiting the improvements in their useful applications to the particular constructions, which for the purpo'se of explanation have been made the subject of illustration. 1n the'drawin s: Figure' 1 is aside elevation; Fig. 2 is an end elevation;

Fig. 3 isa vertical sectional view; and Fig. 4' is an exploded perspectiye view of the steering knuckle and brake `plisk.

Referring to the drawings, and more particularly to Figs. 1, 2 and 3, l have shown my -brake mechanism comprising a primary .disk orplate 1 provided with a suitable friction material 1 on its contact surface, and a4 secondary disk 2 mounted upon a steering wheel.'

The disk 1 is mounted upon a steering knuckle 3, and is free to turn with the wWith these and other objects in view,"which knucklel about Ya king pin" 4 which passes through suitable openings 3 in theknuckle and similar openings in'an aXle.

Attached to the primary disk-at points 6 is a crank shaft 7 having two Acrank arms 8 and a central portion 9 mounted ina bearing support member 10, which is formed integral with the steering knuckle 3. At. the ends of the crank shafts, suitable bearings are provided in the support members 6. Above the king pinv 4 is a housing 11 mounted upon the steering knuckle'. This housing is provided with a recess 12 in which isa slidably mounted plunger 1'3, which is operated by means of a cam 14 fastened to a shaft 15 connected with the service pedal of a vehicle.

Passing through the end of the plunger' extending above the housing 11 is 'a rod 16, having a bearing in the plunger, and connected with the arms 17, forming a yoke member therewith. The arms 17 engage with the crank shaft arms 8, and are bent to conbform to the projections of the steering knuckle. When the rod 15 is actuated byv suitable vconnection with the .service pe-dal ofthe vehicle, the cam 14, which is fastened to the rod, lifts the slidable plunger 13 which is connected through the arms 17 to the crank members 8 of the crank shaft.- -Since the ends of the crank shaft are connected to the prif vmary diskl at 6, and the central portion of the ary disk 2-and thebase 19 of the spokes 2O 05 in the hub 20 of the wheel structure. Several of such angle members 18 are placed around the wheel and are fastened to the spokes by a bolt and nut means 21 which ass through the plate 22 on the face of the weel.

The connection between the secondary disk 2 and the angle member 18 is made by a suitable screw-means 23-having the head of, its bolt countersunk in the secondary disk` 'so as to prevent any tearing of the friction material l when the primary disk is moved into contact with the secondary disk.

By using the boltr and screw means 2l to' fasten the secondary di'sk 2 upon the spokes of the Wheel, I am able to employ the same fopenings for these bolts as areused in the usual Wheel construction to connect the face plate 22 upon the spokes. In this construction, the head of the bolts maybe countersunk in the plate or they may be rounded olf to give thesame appearance as the bolts which are usually inserted through the plate and the spokes.

Referring to Fig. l, l haveshown the primary disk removed from its mounting upon the steering knuckle 3. The disk l is pro. vided with a circulary opening 24 having radial projections or lugs 25 on its circumference, the projections being formed integral with the disk. The steering-knuckle A3 has an enlarged shoulder member 26 Which is -provided With segments 27 formed by means of slotsQ, which slots are adapted to receive the corresponding projections 25 vwhen the primary disk is moved into position and mounted upon the steering knuckle. The primary disk When mounted'upon the steering knuckle is free to move for a short distance axially in the slots 25 in order to attain a frictional contact With the secondary disk. Any suitable means may be provided for returning disk 1 to its idle position. For

example, springs may be tensioned between cross rod 16 and support members 6', or between the ends of crank shaft 7 and the bot tomof the steering knuckle 3.

. plunger located'in the axis of the king pin and free to turn with the axis. This plunger being connected at the center of the toggle action of the yoke, increases the angle formed from the fixed point on the steering knuckle and the point to which it is pinned to the friction disk tov slide on its splines in the direction of the Wheel bearing the secondary disk.` As pressure is exerted on this toggle action through the plunger and the rotation v,of the cam and the cam shaft, the secondary friction disk, which is held from rotating by the splines out in it and iny the steering knuckle, is pressed against the rotating disk messes on the wheel, setting up a frictional stress Which tends to bring the secondary disk and Wheel to a state of rest.. As the king pin is fastened in the axle, and as the turning knuckle turns about this king pin, the cam shaft retains its relative position to the axle, but the plungerand other component parts of the device are free to rotate in or aboutthev Therefore, pressure axis of the king pin. applied to a lever connected at thev cam shaft exerts a pressure against the Wheel in Whatever position the the axle. i

While l haveA shown and described the preferred embodiment of my invention, I Wish it to be understood that l' do not confine vvheel may be in relation to myself tothe precise details of construction herein set forth by Way of. illustration, as it is apparent that many changesA and variations may be made therein, by those skilled in the art, without departing from the spirit of the invention, or exceeding the scope of. the appended claims.

l claim:

1. In a brake mechanism,'including an axle, a Wheel, a primary disk, means for mounting the primary disk for axial but nonrotatable movement, a secondary disk rotating with the Wheel, and a series of toggles to move the primary disk into frictional contact With said secondary disk.

2. In a brake mechanism, including an axle, a steering Wheel, and a steering knuckle, a primary friction plate carried by the knuckle',` means for mounting the primary disk upon the 'steering knuckle, a secondary disk, and means to move the primary disk into .frictional contact with said secondary disk, including an operating member movable along the steering axis of the Wheel.

3. In a brake mechanism, including an axle, a steering Wheel, and a steering knuckle, a primary friction plate, means for mounting the primary disk vupon the steering knuckle, a secondary disk, and means to move the primary disk into frictional contact With said secondary disk including a plunger in the steering axis of the Wheel.

4. In a brake mechanism, including an axle, a steeringv Wheel, and a steering knuckle, a primary friction plate, means for mounting the primary disk upon the steering knuckle, a secondary disk, and means to move the primary disk into frictional contact with said secondary disk including a cam-operated plunger.

5. ln a brake mechanism, including an axle, a steering Wheel, and a steering knuckle, a circular primary friction plate provided TVith a circular opening concentric with the axle, said opening having a plurality of radial projections on its circumference, means for mounting the primary disk upon the steering knuckle against rotation but for axial movement theeover, a secondary disk,

and a series oi toggles connected at one end to the primary disk and at the opposite end to the knuckle, said toggles being operable into frictional contact with said secondary disk.

7. ln a brake mechanism, including an axle, 'a steering Wheel, and a steering knuckle, a .circular primary friction plate provided With a circular openingconcentric With the axle, said Opening having a series of inwardly projecting radial lugs formed integral With the friction plate, means for mounting theprimary disk upon the steering knuckle, a secondary disk, and a series of means tomove the primary disk into frictional contact with said secondary disk.

8. ln a hrake mechanism, including an axle, a steering Wheel, and a steering knuckle, a primary disk, a mounting for said primary disk comprising a shoulder exten-. sion formed integral With the steering knuckle and over Which the primary disk is axially nonrotatably slidable, a secondary disk, and .a series of means to move the primary disk in irictional contact With said secondary disk.

9. ln a brake mechanism, including an axle, a steering Wheel,' and a steering knuckle, a primary disk, a mounting for said primary disk, comprising a circulan shoulder extension 'formed integral With the steering knuckle, a secondary disk, and a series of means to `move the primary disk in frictional contact With said secondary disk.

l0. ln a. brakemeclianism, including an aiile,a steering Wheel, and a steering knuckle,

a primary disk, a. mounting for said primary disk comprising a circular shoulderextension v:formed integral Wit-li the steering knuckle and having slots cut in its periphery and upon vwhich the primary disk is axially 'slidahly supported, a secondary disk, and a series of means te move the primary disk in rictional contact with said secondarydisk.

l1, ln lorake mechanism, including van axle, a steering Wheel and a steering knuckle, a primary disk, a mounting 'disk comprsing a circular shoulder extension liavin'ga plurality et segments on its periplieiy -formed integral 'yvith' the steering knuckle, said primary disk'lceing axially slid- 'ahly supported .upon said sheufloler Q nd interengaged therewith against rotation. theretorsaid primary over, a-secondary disk, and a series ot means 4to move the primary disk in rictional contact with said secondary disk.

12. ln a brake mechanism, including an.k axle, a steering Wheel and a steering knuckle, a primary disk, a mounting for said primary disk .comprising a. circular plate extension formed integral with the steering knuckle concentric with the axle, and having a plurality of radial slots cut in its periphery, a secondary disk,and a series of means to move the primary disk in frictional Contact with said secondary disk. y

13. ln a brake mechanism includingan axle, a steering wheel and a steering knuckle, a primary disk, a secondary disk, and a series of means adapted tomove the primary disk into frictional Contact With the secondary' disk, comprising a toggle connection, ayoke and a cani operated plunger. 14. ln a brake mechanism including an axle, a steering Wheel and a steering knuckle, a primary disk, a secondary disk, and a series o coacting means adapted to move the primary disk axially into frictional contact with the secondary disk, comprising a toggle connection, a yoke and a. cam operated plunger. 15. ln a brake mechanism including an axle, a steering Wheel, and a steering knuckle, a primary disk, a secondary disk, and a series of means adapted to move the primary disk into tiictional Contact with disk, comprising -a crankshaft havin tvvo crank arms, the ends of the crankshaft ing attached to the primary disk, said shaft having its central portion between the crank arms attached to the steering knuckle, a yoke and a cam operated plunger.' y 16. ln a brake mechanism including an axle, a steering Wheel and a steering'knu'ckle, a primary disk, a secondary disk, and a series of means adapted to move the primary disk into trictional Contact With the secondary disk, comprising a recessed housing mountedk upon the steering knuckle, a cam operated plunger slidahly mounted in the housing, and a yoke pivoted on the plunger and engaging the crank arms of the crankshaft.

17. ln a brake .mechanism including an axle, a steering Wheel, a steering knuckle, a4 primary friction vplate provided'with a circular opening. concentric With the axle, said opening having` a plurality of radial projections on its circumference, a circular shoulder extension ormedintegral-With the steering knuckle and having slots cut in its periphery, asecondary disk, and a series of means to move the primary disk into frictioiial contact With said secondary disk.

18. ln a brake 1 mechanism including an akle, a steerin wheel and a steering knuckle, a primary-'friction plate' provided with a cir.-

Vcular opening concentric Withthe axle, said opening having plurality or radial projections on its circumterence, a circular shoulthe secondary ico der extension formed integral with the steering knuckle and having slots cut 1n its periphery, a secondary disk, and a series of means adapted to move the primary disk into frictional contact'with the secondary disk, comprising a crankshaft having two cra-nk arms, the ends of the crankshaft being attached to the primary disk, said shaft having'its central portion between the crank arms attached to the steering knuckle, a yoke, and a cam operated plunger.

19. In a brake mechanism including an axle, a steering wheel and a steering knuckle, a primary friction plate provided with a circular opening concentric with the axle, said opening having a. plurality of radial projections on its circumference, a circular shoulder extension formed integral with the steering knuckle and having slots cut in its periphery, a secondary disk, and a series of means adapted to moveJ the primary disk into frictional contact with the secondary disk comprising a recessed housing mounted upon the steering knuckle, a cam operated plunger slidably mounted'in the housing, and ayoke pivoted on the plunger and engaging the crank arms of the crankshaft.

20. A toggle-operated axially-movable brake friction member, for a vehicle wheel.

21. In combination with an axially-movable brake friction member for a pivoted wheel, applyingmeans therefor lcomprising a toggle with its knuckle operating in the plane of the wheel pivot to increase the effective length of the toggle perpendicularly with respect to the plane of the wheel.

22. A wheel movable about two axes, in combination with a disk brake for said Wheel and operating means for the brake including a part movable along each one of said axes.l

23. A pivoted wheel, in combination with a disk brake for said wheel and operating means for the brake including a part movable along the axis of the wheel pivot.

24. Brake mechanism for a swiveled wheel comprising, in combination, a friction elelment carried by the wheel, a retarding. ele'- ment movable into enga-gement with thefriction element, and means operable to move said retarding element into engagement with the friction element including a. plunger located in the swiveling axis of the wheel, a part engaging said plunger to actuate the same, and

a. toggle connection between said plunger and retarding element. Y

25. Brake mechanism for a swiveled wheel comprising, in combination, a friction element carried by the wheel, a retarding element movable into engagement with the friction element, and means operable to move said retarding element into engagement with the friction element including a plunger movable in the swiveiing axis, a part pivotally supported in said swiveling axis enga ging the vplunger to actuate the plunger, and pivotally supported mechanism coupled with the plunger to be actuated thereby.

26. Brake mechanism for a swiveled Wheel comprising, in combination, a friction element carried by the wheel, a retarding element movable into engagement with the friction element, and means operable to move said retarding element into engagement with the friction element including aplunger located in the swiveling axis of the wheel and offset inwardly from the plane of the retarding element, means engaging said plunger at one end of the swiveled support of the wheel and between said support and the end of the plunger.

27. Brake mechanism for a swiveled wheel comprising, in combination, a friction element carried by the wheel, a retarding element movable into engagement with the friction element, and means operable to move said retarding element into engagement with the friction element including plunger located in the swiveling axis of the wheel, and parts ionnected therewith and arranged on oppos, e sides thereof i'n the plane of the swiveling axis.

In testimony whereof I affix my signature.

STUART H. CLAPP. 

